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- <?php
- /**
- * PHPMailer - PHP email creation and transport class.
- * PHP Version 5.5
- * @package PHPMailer
- * @see https://github.com/PHPMailer/PHPMailer/ The PHPMailer GitHub project
- * @author Marcus Bointon (Synchro/coolbru) <phpmailer@synchromedia.co.uk>
- * @author Jim Jagielski (jimjag) <jimjag@gmail.com>
- * @author Andy Prevost (codeworxtech) <codeworxtech@users.sourceforge.net>
- * @author Brent R. Matzelle (original founder)
- * @copyright 2012 - 2020 Marcus Bointon
- * @copyright 2010 - 2012 Jim Jagielski
- * @copyright 2004 - 2009 Andy Prevost
- * @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
- * @note This program is distributed in the hope that it will be useful - WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.
- */
- /**
- * Get an OAuth2 token from an OAuth2 provider.
- * * Install this script on your server so that it's accessible
- * as [https/http]://<yourdomain>/<folder>/get_oauth_token.php
- * e.g.: http://localhost/phpmailer/get_oauth_token.php
- * * Ensure dependencies are installed with 'composer install'
- * * Set up an app in your Google/Yahoo/Microsoft account
- * * Set the script address as the app's redirect URL
- * If no refresh token is obtained when running this file,
- * revoke access to your app and run the script again.
- */
- namespace PHPMailer\PHPMailer;
- /**
- * Aliases for League Provider Classes
- * Make sure you have added these to your composer.json and run `composer install`
- * Plenty to choose from here:
- * @see http://oauth2-client.thephpleague.com/providers/thirdparty/
- */
- //@see https://github.com/thephpleague/oauth2-google
- use League\OAuth2\Client\Provider\Google;
- //@see https://packagist.org/packages/hayageek/oauth2-yahoo
- use Hayageek\OAuth2\Client\Provider\Yahoo;
- //@see https://github.com/stevenmaguire/oauth2-microsoft
- use Stevenmaguire\OAuth2\Client\Provider\Microsoft;
- if (!isset($_GET['code']) && !isset($_GET['provider'])) {
- ?>
- <html>
- <body>Select Provider:<br>
- <a href='?provider=Google'>Google</a><br>
- <a href='?provider=Yahoo'>Yahoo</a><br>
- <a href='?provider=Microsoft'>Microsoft/Outlook/Hotmail/Live/Office365</a><br>
- </body>
- </html>
- <?php
- exit;
- }
- require 'vendor/autoload.php';
- session_start();
- $providerName = '';
- if (array_key_exists('provider', $_GET)) {
- $providerName = $_GET['provider'];
- $_SESSION['provider'] = $providerName;
- } elseif (array_key_exists('provider', $_SESSION)) {
- $providerName = $_SESSION['provider'];
- }
- if (!in_array($providerName, ['Google', 'Microsoft', 'Yahoo'])) {
- exit('Only Google, Microsoft and Yahoo OAuth2 providers are currently supported in this script.');
- }
- //These details are obtained by setting up an app in the Google developer console,
- //or whichever provider you're using.
- $clientId = 'RANDOMCHARS-----duv1n2.apps.googleusercontent.com';
- $clientSecret = 'RANDOMCHARS-----lGyjPcRtvP';
- //If this automatic URL doesn't work, set it yourself manually to the URL of this script
- $redirectUri = (isset($_SERVER['HTTPS']) ? 'https://' : 'http://') . $_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF'];
- //$redirectUri = 'http://localhost/PHPMailer/redirect';
- $params = [
- 'clientId' => $clientId,
- 'clientSecret' => $clientSecret,
- 'redirectUri' => $redirectUri,
- 'accessType' => 'offline'
- ];
- $options = [];
- $provider = null;
- switch ($providerName) {
- case 'Google':
- $provider = new Google($params);
- $options = [
- 'scope' => [
- 'https://mail.google.com/'
- ]
- ];
- break;
- case 'Yahoo':
- $provider = new Yahoo($params);
- break;
- case 'Microsoft':
- $provider = new Microsoft($params);
- $options = [
- 'scope' => [
- 'wl.imap',
- 'wl.offline_access'
- ]
- ];
- break;
- }
- if (null === $provider) {
- exit('Provider missing');
- }
- if (!isset($_GET['code'])) {
- //If we don't have an authorization code then get one
- $authUrl = $provider->getAuthorizationUrl($options);
- $_SESSION['oauth2state'] = $provider->getState();
- header('Location: ' . $authUrl);
- exit;
- //Check given state against previously stored one to mitigate CSRF attack
- } elseif (empty($_GET['state']) || ($_GET['state'] !== $_SESSION['oauth2state'])) {
- unset($_SESSION['oauth2state']);
- unset($_SESSION['provider']);
- exit('Invalid state');
- } else {
- unset($_SESSION['provider']);
- //Try to get an access token (using the authorization code grant)
- $token = $provider->getAccessToken(
- 'authorization_code',
- [
- 'code' => $_GET['code']
- ]
- );
- //Use this to interact with an API on the users behalf
- //Use this to get a new access token if the old one expires
- echo 'Refresh Token: ', $token->getRefreshToken();
- }
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